Implement stable overlap check considering negative traits #93175
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📌 Commit 8189bac has been approved by |
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…e-new, r=nikomatsakis Implement stable overlap check considering negative traits This PR implement the new disjointness rules for overlap check described in https://rust-lang.github.io/negative-impls-initiative/explainer/coherence-check.html#new-disjointness-rules r? `@nikomatsakis`
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…askrgr Rollup of 8 pull requests Successful merges: - rust-lang#88794 (Add a `try_clone()` function to `OwnedFd`.) - rust-lang#93064 (Properly track `DepNode`s in trait evaluation provisional cache) - rust-lang#93118 (Move param count error emission to end of `check_argument_types`) - rust-lang#93144 (Work around missing code coverage data causing llvm-cov failures) - rust-lang#93169 (Fix inconsistency of local blanket impls) - rust-lang#93175 (Implement stable overlap check considering negative traits) - rust-lang#93251 (rustdoc settings: use radio buttons for theme) - rust-lang#93269 (Use error-on-mismatch policy for PAuth module flags.) Failed merges: r? `@ghost` `@rustbot` modify labels: rollup
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should this have had a perf run? or is it expected to be an effective no-op for stable code like the benchmark suite? (I'm trying to track down what caused some performance deltas in rollup PR #93288.) |
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Only traverse attrs once while checking for coherence override attributes In coherence, while checking for negative impls override attributes: only traverse the `DefId`s' attributes once. This PR is an easy way to get back some of the small perf loss in rust-lang#93175
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…nikomatsakis Move overlap_mode into trait level attribute r? `@nikomatsakis` Should fix some performance regressions noted on rust-lang#93175
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This PR implement the new disjointness rules for overlap check described in https://rust-lang.github.io/negative-impls-initiative/explainer/coherence-check.html#new-disjointness-rules
r? @nikomatsakis